n-1+sum(if c(n-1)=
j
1 else 0 fi | j < k) = n
n
k
k( List)
j:k, x,y:||p(j)||. x < y 
(p(j))[x] > (p(j))[y]
j:k, x:||p(j)||. (p(j))[x] < n-1 & c((p(j))[x]) = j
sum(if c(n-1)=j ||[(n-1) / (p(j))]|| else ||p(j)|| fi | j < k) = n
k:, f,g:(k), p:(k
). sum(if p(i) f(i)+g(i) else f(i) fi | i < k) = sum(f(i) | i < k)+sum(if p(i) g(i) else 0 fi | i < k)
0
| 1 | n-1+sum(if c(n-1)=j 1 else 0 fi | j < k) = n | 5 steps |
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